Expression class abstract

Implementers

• NotExpression
• ValueExpression

Constructors

Expression(String? type)

Expression.fromJson(Map<String, dynamic> data)

factory

Properties

hashCode → int

The hash code for this object.

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

type ↔ String?

getter/setter pair

Methods

evaluate(QuestionnaireState state) → bool?

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toJson() → Map<String, dynamic>

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

override

Constants

keyType → const String